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f5a26acf01
linux/drivers/pinctrl
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Mika Westerberg f5a26acf01 pinctrl: intel: Initialize GPIO properly when used through irqchip 
When a GPIO is requested using gpiod_get_* APIs the intel pinctrl driver
switches the pin to GPIO mode and makes sure interrupts are routed to
the GPIO hardware instead of IOAPIC. However, if the GPIO is used
directly through irqchip, as is the case with many I2C-HID devices where
I2C core automatically configures interrupt for the device, the pin is
not initialized as GPIO. Instead we rely that the BIOS configures the
pin accordingly which seems not to be the case at least in Asus X540NA
SKU3 with Focaltech touchpad.

When the pin is not properly configured it might result weird behaviour
like interrupts suddenly stop firing completely and the touchpad stops
responding to user input.

Fix this by properly initializing the pin to GPIO mode also when it is
used directly through irqchip.

Fixes: 7981c0015a ("pinctrl: intel: Add Intel Sunrisepoint pin controller and GPIO support")
Reported-by: Daniel Drake <drake@endlessm.com>
Reported-and-tested-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-02 13:11:04 +01:00
..
aspeed pinctrl: aspeed: Rework strap register write logic for the AST2500 2017-08-31 13:39:38 +02:00
bcm This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
berlin pinctrl: move const qualifier before struct 2017-08-14 15:01:02 +02:00
freescale License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel pinctrl: intel: Initialize GPIO properly when used through irqchip 2017-12-02 13:11:04 +01:00
mediatek License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
meson pinctrl: meson-axg: Add new pinctrl driver for Meson AXG SoC 2017-11-30 14:29:38 +01:00
mvebu This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
nomadik This is the bulk of GPIO changes for the v4.15 kernel cycle: 2017-11-14 17:23:44 -08:00
pxa pinctrl: pxa: pxa2xx: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE 2017-11-30 14:42:04 +01:00
qcom This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
samsung This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
sh-pfc This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
sirf Merge branch 'gpio-irqchip-rework' of /home/linus/linux-gpio into devel 2017-11-09 09:38:42 +01:00
spear This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
sprd pinctrl: sprd: fix off by one bugs 2017-09-12 11:27:36 +02:00
stm32 This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
sunxi This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
tegra License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ti pinctrl: ti-iodelay: remove redundant unused variable dev 2017-11-08 13:49:57 +01:00
uniphier This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
vt8500 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zte pinctrl: zte: fix 'functions' allocation in zx_pinctrl_build_state() 2017-08-14 15:01:01 +02:00
core.c pinctrl/gpio: Unify namespace for cross-calls 2017-09-22 11:02:10 +02:00
core.h pinctrl/gpio: Unify namespace for cross-calls 2017-09-22 11:02:10 +02:00
devicetree.c pinctrl: Delete an error message 2017-08-31 15:45:29 +02:00
devicetree.h pinctrl: core: Use delayed work for hogs 2017-01-03 09:26:16 +01:00
Kconfig This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pinconf-generic.c pinctrl: Add skew-delay pin config and bindings 2017-11-08 13:49:45 +01:00
pinconf.c pinctrl: check ops->pin_config_set in pinconf_set_config() 2017-08-14 15:01:59 +02:00
pinconf.h pinctrl: move const qualifier before struct 2017-08-14 15:01:02 +02:00
pinctrl-adi2-bf54x.c
pinctrl-adi2-bf60x.c
pinctrl-adi2.c pinctrl: adi2: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:40:45 +02:00
pinctrl-adi2.h
pinctrl-amd.c This is the bulk of pin control changes for the v4.15 2017-11-16 10:57:11 -08:00
pinctrl-amd.h pinctrl/amd: save pin registers over suspend/resume 2017-09-12 15:58:45 +02:00
pinctrl-artpec6.c pinctrl: artpec6: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:36:59 +02:00
pinctrl-as3722.c pinctrl: as3722: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:21 +02:00
pinctrl-at91-pio4.c pinctrl: Convert to using %pOF instead of full_name 2017-08-14 15:01:02 +02:00
pinctrl-at91.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-at91.h
pinctrl-coh901.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-coh901.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pinctrl-da850-pupd.c Merge branch 'ib-pinctrl-genprops' into devel 2017-01-26 15:27:54 +01:00
pinctrl-digicolor.c pinctrl: digicolor: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:39:36 +02:00
pinctrl-falcon.c pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-gemini.c pinctrl: gemini: Add two missing GPIO groups 2017-11-30 14:35:01 +01:00
pinctrl-ingenic.c pinctrl: ingenic: make function ingenic_pinctrl_probe static 2017-10-09 23:01:48 +02:00
pinctrl-lantiq.c pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-lantiq.h pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-lpc18xx.c pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
pinctrl-max77620.c pinctrl: max77620: Use common error handling code in max77620_pinconf_set() 2017-11-08 13:49:57 +01:00
pinctrl-mcp23s08.c pinctrl: mcp23s08: Improve unlocking of a mutex in mcp23s08_irq() 2017-11-29 13:51:10 +01:00
pinctrl-oxnas.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-palmas.c pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
pinctrl-pic32.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-pic32.h
pinctrl-pistachio.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-rk805.c pinctrl: Add pinctrl driver for the RK805 PMIC 2017-08-21 08:54:46 +01:00
pinctrl-rockchip.c pinctrl: rockchip: Add iomux-route switching support for rk3288 2017-10-31 10:13:41 +01:00
pinctrl-rza1.c pinctrl: rza1: Add support for RZ/A1L 2017-10-09 09:16:21 +02:00
pinctrl-single.c pinctrl: single: make two arrays static const, reduces object code size 2017-09-21 14:09:49 +02:00
pinctrl-st.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-sx150x.c Merge branch 'gpio-irqchip-rework' of /home/linus/linux-gpio into devel 2017-11-09 09:38:42 +01:00
pinctrl-tb10x.c pinctrl: tb10x: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:41:40 +02:00
pinctrl-tz1090-pdc.c pinctrl: tz1090-pdc: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:42:00 +02:00
pinctrl-tz1090.c pinctrl: tz1090: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:42:19 +02:00
pinctrl-u300.c pinctrl: u300: make u300_pmx_registers static 2016-06-13 09:27:43 +02:00
pinctrl-utils.c pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map 2016-04-01 15:06:36 +02:00
pinctrl-utils.h pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map 2016-04-01 15:06:36 +02:00
pinctrl-xway.c pinctrl: xway: fix copy/paste error in xrx200_grps 2017-05-29 18:46:42 +02:00
pinctrl-zynq.c pinctrl: zynq: Fix warnings in the driver 2017-08-14 15:01:01 +02:00
pinmux.c pinctrl: add __rcu annotations to fix sparse warnings 2017-08-14 15:01:59 +02:00
pinmux.h pinctrl: move const qualifier before struct 2017-08-14 15:01:02 +02:00